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  • WPF Listbox - Empty List Display Message

    - by David Ward
    Can anyone suggest the best way to display a Textblock (with a text such as "List Empty") so that it's visibility is bound to the Items.Count. I have tried the following code and can't get it to work, so think that I must be doing it wrong. <ListBox x:Name="lstItems" ItemsSource="{Binding ListItems}"> </ListBox> <TextBlock Margin="4" FontStyle="Italic" FontSize="12" Text="List is empty" Visibility="Collapsed"> <TextBlock.Style> <Style TargetType="{x:Type TextBlock}"> <Style.Triggers> <DataTrigger Binding="{Binding ElementName=lstItems, Path=Items.Count}" Value="0"> <Setter Property="Visibility" Value="Visible" /> </DataTrigger> </Style.Triggers> </Style> </TextBlock.Style> </TextBlock>

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  • Differentiating Between UITouch Objects On The iPhone

    - by Jasarien
    Hey guys, I'm trying to differentiate between two (or more) UITouch objects on the iPhone. Specifically, I'd like to know the order in which the touches occurred. For instance, in my -touchesBegan:withEvent: method I get an NSSet of UITouch objects. Now I can find out how many touches there are, but, which object represents which finger? I notice the timestamp property on UITouch - is this what I'm looking for? I see how that would be useful to obtaining the last or first touch - providing the touches don't mutate... Therein lies my problem. I can use the timestamp to single out the latest touch, but then the touch that occurred first moves, and IT becomes the latest touch... At the end of this exercise, I'd like to be able to implement the "pinch" gesture to zoom in or out, etc. Any help would be greatly appreciated, thanks.

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  • Pass Data to Data Template Selector

    - by Michael Sync
    How do you guys pass the data (parameter) to DataTemplate Selector? The only one that I can think of is to use an attached property in DataTemplate Selector? Example: public class DisableWeekendsSelection : DataTemplateSelector { [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Usage", "CA2211:NonConstantFieldsShouldNotBeVisible", Justification = "DependencyProperty")] public static readonly DependencyProperty Parameter = DependencyProperty.RegisterAttached("Parameter", typeof(ObservableCollection<Date>), typeof(DisableWeekendsSelection), new FrameworkPropertyMetadata(null, FrameworkPropertyMetadataOptions.BindsTwoWayByDefault)); public static ObservableCollection<Date> GetParameter(DependencyObject dp) { return dp.GetValue(Parameter) as ObservableCollection<Date>; } public static void SetParameter(DependencyObject dp, ObservableCollection<Date> value) { dp.SetValue(Parameter, value); } public override DataTemplate SelectTemplate(object item, DependencyObject container) { The problem with this approach is that I'm not able to get the value of Parameter in SelectTemplate method. Any suggestion would be appreciated. Thanks in advance.

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  • Binding a nullable int to an asp:TextBox

    - by Slauma
    I have a property int? MyProperty as a member in my datasource (ObjectDataSource). Can I bind this to a TextBox, like <asp:TextBox ID="MyTextBox" runat="server" Text='<%# Bind("MyProperty") %>' /> Basically I want to get a null value displayed as blank "" in the TextBox, and a number as a number. If the TextBox is blank MyProperty shall be set to null. If the TextBox has a number in it, MyProperty should be set to this number. If I try it I get an exception: "Blank is not a valid Int32". But how can I do that? How to work with nullable properties and Bind? Thanks in advance!

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  • Override default behavior of SPACE key in .net WinForms ListView

    - by Axarydax
    Hello, I'd like to implement some custom behavior of Space key in a ListView. Basically I'd like to toggle selected status of the item under cursor - that should be fairly simple this.FocusedItem.Selected = !this.FocusedItem.Selected; but alas, it also does the default action, which is to select the focused item. This way I am unable to 'unselect' the focused item. I've looked for similar problems and they suggest using PreviewKeyDown event, in which I would process the key and disallow the ListView to do its default action. But the PreviewKeyDown event argument has no "handled" property, so I cannot 'eat' this key.

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  • What's the best Communication Pattern for EJB3-based applications?

    - by Hank
    I'm starting a JEE project that needs to be strongly scalable. So far, the concept was: several Message Driven Beans, responsible for different parts of the architecture each MDB has a Session Bean injected, handling the business logic a couple of Entity Beans, providing access to the persistence layer communication between the different parts of the architecture via Request/Reply concept via JMS messages: MDB receives msg containing activity request uses its session bean to execute necessary business logic returns response object in msg to original requester The idea was that by de-coupling parts of the architecture from each other via the message bus, there is no limit to the scalability. Simply start more components - as long as they are connected to the same bus, we can grow and grow. Unfortunately, we're having massive problems with the request-reply concept. Transaction Mgmt seems to be in our way plenty. It seams that session beans are not supposed to consume messages?! Reading http://blogs.sun.com/fkieviet/entry/request_reply_from_an_ejb and http://forums.sun.com/message.jspa?messageID=10338789, I get the feeling that people actually recommend against the request/reply concept for EJBs. If that is the case, how do you communicate between your EJBs? (Remember, scalability is what I'm after) Details of my current setup: MDB 1 'TestController', uses (local) SLSB 1 'TestService' for business logic TestController.onMessage() makes TestService send a message to queue XYZ and requests a reply TestService uses Bean Managed Transactions TestService establishes a connection & session to the JMS broker via a joint connection factory upon initialization (@PostConstruct) TestService commits the transaction after sending, then begins another transaction and waits 10 sec for the response Message gets to MDB 2 'LocationController', which uses (local) SLSB 2 'LocationService' for business logic LocationController.onMessage() makes LocationService send a message back to the requested JMSReplyTo queue Same BMT concept, same @PostConstruct concept all use the same connection factory to access the broker Problem: The first message gets send (by SLSB 1) and received (by MDB 2) ok. The sending of the returning message (by SLSB 2) is fine as well. However, SLSB 1 never receives anything - it just times out. I tried without the messageSelector, no change, still no receiving message. Is it not ok to consume message by a session bean? SLSB 1 - TestService.java @Resource(name = "jms/mvs.MVSControllerFactory") private javax.jms.ConnectionFactory connectionFactory; @PostConstruct public void initialize() { try { jmsConnection = connectionFactory.createConnection(); session = jmsConnection.createSession(false, Session.AUTO_ACKNOWLEDGE); System.out.println("Connection to JMS Provider established"); } catch (Exception e) { } } public Serializable sendMessageWithResponse(Destination reqDest, Destination respDest, Serializable request) { Serializable response = null; try { utx.begin(); Random rand = new Random(); String correlationId = rand.nextLong() + "-" + (new Date()).getTime(); // prepare the sending message object ObjectMessage reqMsg = session.createObjectMessage(); reqMsg.setObject(request); reqMsg.setJMSReplyTo(respDest); reqMsg.setJMSCorrelationID(correlationId); // prepare the publishers and subscribers MessageProducer producer = session.createProducer(reqDest); // send the message producer.send(reqMsg); System.out.println("Request Message has been sent!"); utx.commit(); // need to start second transaction, otherwise the first msg never gets sent utx.begin(); MessageConsumer consumer = session.createConsumer(respDest, "JMSCorrelationID = '" + correlationId + "'"); jmsConnection.start(); ObjectMessage respMsg = (ObjectMessage) consumer.receive(10000L); utx.commit(); if (respMsg != null) { response = respMsg.getObject(); System.out.println("Response Message has been received!"); } else { // timeout waiting for response System.out.println("Timeout waiting for response!"); } } catch (Exception e) { } return response; } SLSB 2 - LocationService.Java (only the reply method, rest is same as above) public boolean reply(Message origMsg, Serializable o) { boolean rc = false; try { // check if we have necessary correlationID and replyTo destination if (!origMsg.getJMSCorrelationID().equals("") && (origMsg.getJMSReplyTo() != null)) { // prepare the payload utx.begin(); ObjectMessage msg = session.createObjectMessage(); msg.setObject(o); // make it a response msg.setJMSCorrelationID(origMsg.getJMSCorrelationID()); Destination dest = origMsg.getJMSReplyTo(); // send it MessageProducer producer = session.createProducer(dest); producer.send(msg); producer.close(); System.out.println("Reply Message has been sent"); utx.commit(); rc = true; } } catch (Exception e) {} return rc; } sun-resources.xml <admin-object-resource enabled="true" jndi-name="jms/mvs.LocationControllerRequest" res-type="javax.jms.Queue" res-adapter="jmsra"> <property name="Name" value="mvs.LocationControllerRequestQueue"/> </admin-object-resource> <admin-object-resource enabled="true" jndi-name="jms/mvs.LocationControllerResponse" res-type="javax.jms.Queue" res-adapter="jmsra"> <property name="Name" value="mvs.LocationControllerResponseQueue"/> </admin-object-resource> <connector-connection-pool name="jms/mvs.MVSControllerFactoryPool" connection-definition-name="javax.jms.QueueConnectionFactory" resource-adapter-name="jmsra"/> <connector-resource enabled="true" jndi-name="jms/mvs.MVSControllerFactory" pool-name="jms/mvs.MVSControllerFactoryPool" />

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  • Self closing Html Generic Control?

    - by Chalkey
    I am writing a bit of code to add a link tag to the head tag in the code behind... i.e. HtmlGenericControl css = new HtmlGenericControl("link"); css.Attributes["rel"] = "Stylesheet"; css.Attributes["type"] = "text/css"; css.Attributes["href"] = String.Format("/Assets/CSS/{0}", cssFile); to try and achieve something like... <link rel="Stylesheet" type="text/css" href="/CSS/Blah.css" /> I am using the HtmlGenericControl to achieve this... the issue I am having is that the control ultimatly gets rendered as... <link rel="Stylesheet" type="text/css" href="/CSS/Blah.css"></link> I cant seem to find what I am missing to not render the additional </link>, I assumed it should be a property on the object. Am I missing something or is this just not possible with this control? Thanks

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  • NHibernate IPreUpdateEventListener weird behaviour

    - by mcaaltuntas
    I am using NHibernate 2.0.1 and IPreUpdateEventListener,IPreInsertEventListener events for audit logging purposes. I have a basic entity that has a one to many relation like this. User-------Books From an ASP.NET MVC controller method i am adding a book to a user like this. Book book =new Book("LOTR"); var userBook=user.AddBook(book); After session flushing OnPreInsert event called once for newly created Book object than OnPreUpdate called for all books objects in user's books collection even they have not changed.So I am updating LastMofiedDate property of all books objects and I dont want to do this. Is this supposed behaviour of NHibernate or am I missing something?

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  • How listen for UIButton state change?

    - by morticae
    I'm extending UIButton with generic functionality to change certain appearance attributes based on the displayed title. In order to do this, I need to detect and respond to changes in the "state" property. This is so I make sure the appearance is adjusted properly if the user has set different titles for different states. I assumed I would need to use some sort of KVO like the following: [self addObserver:self forKeyPath:@"state" options:NSKeyValueObservingOptionNew context:nil]; But this does not seem to fire the observeValueForKeyPath:... method for @"state" or @"currentTitle". I assume this is because UIButton does not implement the KVO pattern for those properties. I do not want to just listen for clicks. Those events cause a state change, but are not the only potential causes. Does anyone know a way to listen to and respond to state changes of a UIButton? Thanks

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  • JavaScript: Keeping track of eventListeners on DOM elements

    - by bobthabuilda
    What is the best way to keep track of eventListener functions on DOM elements? Should I add a property to the element which references the function like this: var elem = document.getElementsByTagName( 'p' )[0]; function clickFn(){}; elem.listeners = { click: [clickFn, function(){}] }; elem.addEventListener( 'click', function(e){ clickFn(e); }, false ); Or should I store it in my own variable in my code like below: var elem = document.getElementsByTagName( 'p' )[0]; function clickFn(){}; // Using window for the sake of brevity, otherwise I wouldn't =D // DOM elements and their listeners are referenced here in a paired array window.listeners = [elem, { click: [clickFn, function(){}] }]; elem.addEventListener( 'click', function(e){ clickFn(e); }, false ); Obviously the second method would be less obtrusive, but it seems it could get intensive iterating through all those possibilities. Which is the best way and why? Is there a better way?

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  • MOSS 2007 BDC Profile Import fails for a few users

    - by Hobber
    We have set up a BDC Profile Import for Sharepoint 2007 and it works well for 99% of the users. A handful fails with the "Exception occured when calling into BIL connector for import from non master data source" message in the crawl log, though The ULS logs reveal the following information: Exception Profile Import: Exception occured when importing user: '[redacted]\[redacted]'. Microsoft.Office.Server.UserProfiles.PropertyInvalidValueException: Invalid Property Value: Could not find SID corresponding to input account name I have confirmed that the user has a sharepoint profile matching the username is a valid domain user exists in AD Can anyone help med troubleshoot this?

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  • Grails: Problem with nested associations in criteria builder

    - by Mr.B
    I have a frustrating problem with the criteria builder. I have an application in which one user has one calendar, and a calendar has many entries. Seems straightforward enough, but when I try to get the calendar entries for a given user, I can't access the user property (MissingMethodException). Here's the code: def getEntries(User user) { def entries = Entries.createCriteria().list() { calendar { user { eq("user.id", user.id) } } } } I have even tried the following variation: def getEntries(User user) { def entries = Entries.createCriteria().list() { calendar { eq("user", user) } } } That did not raise an exception, but didn't work either. Here's the relevant parts of the domain classes: class Calendar { static belongsTo = [user: User] static hasMany = [entries: Entries] ... } class User { Calendar calendar ... } class Entry { static belongsTo = [calendar: Calendar] ... } When Googling I came across a similar problem noted in early 2008: http://jira.codehaus.org/browse/GRAILS-1412 But according to that link this issue should have been solved long ago. What am I doing wrong?

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  • How should I load a xib into a detail view for a split view iPad objective app?

    - by editor
    I've got a split view iPad app with table view in the master pane. After drilling down several levels, each time loading a new .xib, I'd like one of the cells to trigger a web page load in the detail pane. Right now I can only get the web page .xib to load in the master pane side -- which is a master pain in my side. The basic load call where "URLWindow" is a class loaded with initWithNibName: [[self navigationController] pushViewController:URLWindow animated:YES]; I want to do this, but it doesn't seem to work: @interface @property (nonatomic, retain) IBOutlet DetailViewController *detailViewController; ... @implementation [[self detailViewController] pushViewController:URLWindow animated:YES]; How should I be loading the URLWindow .xib into a detail view for a split view detail pane?

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  • Where should I put my breakpoint to check XML Response string from a web service?

    - by burak ozdogan
    Hi, You know, once you add a web reference to a webservice a wrapper code is generated by Visuel Studio. I was wondering if there is a method (or property) which is generated by Visual Studio whatever web service you add to your project so that I can put a breakpoint there and once the debugger stops there, I can simply read the response from web-service in an xml format (or should I say, soap). I don't want to use fiddler or a tool like that. Is it possible? Does such a place exist in the webservice wrapper code for all the added webservice Thank you, burak ozdogan

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  • Set the focus on Popup Panel

    - by Jan-Frederik Carl
    Hello, I use a modalpopupextender to show a popup when the user clicks on a button. <ajaxToolkit:ModalPopupExtender ID="mpe1" runat="server" TargetControlID="statusInfoLb" PopupControlID="statusInfoPanel" DropShadow="false" OkControlID="okBtn" OnOkScript="onOk()"> </ajaxToolkit:ModalPopupExtender> <asp:Panel ID="statusInfoPanel" runat="server" Height="185px" Width="454px" SkinID="Panel_Notification2" DefaultButton="okBtn"> The panel has an OK-Button to dispose the popup. It is also possible to click Return to dispose the popup, because the panel has the property DefaultButton="okBtn". But this only works when the popup has the focus, which is not so from the start. How do I get the popup panel to have the focus when it shows? I would like to use jQuery.

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  • while downloading filenames from non english languages are not getting displayed on the downloaded f

    - by pks83
    When i am trying to download a file whose name has characters from languages like chinese japanese etc...... non ascii... the downloaded file name is garbled. How to rectify it. I have tried to put charset=UTF-8 in the Content-type header property, but no success. Please help. Code below. header("Cache-Control: ");// leave blank to avoid IE errors header("Pragma: ");// leave blank to avoid IE errors header("Content-type: application/octet-stream"); header("Content-Disposition: attachment; filename=\"".$instance_name."\""); header("Content-length:".(string)(filesize($fileString))); sleep(1); fpassthru($fdl);

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  • How to avoid code repetition initializing final properties?

    - by Hernán Eche
    public class Code{ //many properties //... final String NEWLINE;// ohh a final property! void creation() //this method is for avoid repetition of code { //final initialization can't be put here =( Source= new StringBuffer(); //many other commons new's .. //... } Code() { NEWLINE = System.getProperty("line.separator"); creation(); } Code(String name, int numberr) { NEWLINE = System.getProperty("line.separator"); creation(); name=new Someting(name); number = new Magic(number); } }

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  • How to prevent a javascript/backbone.js cloned model from sharing attributes

    - by user540727
    I'm working with backbone.js models, so I don't know if my question is particular to the way backbone handles cloning or if it applies to javascript in general. Basically, I need to clone a model which has an attribute property assigned an object. The problem is that when I update the parent or clone's attribute, the other model is also updated. Here is a quick example: var A = Backbone.Model.extend({}); var a = new A({'test': {'some': 'crap'}}); var b = a.clone(); a.get('test')['some'] = 'thing'; // I could also use a.set() to set the attribute with the same result console.log(JSON.stringify(a)) console.log(JSON.stringify(b)) which logs the following: {"test":{"some":"thing"}} {"test":{"some":"thing"}} I would prefer to clone a such that b won't be referencing any of its attributes. Any help would be appreciated.

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  • Cannot add library in VC++ 2008: My System is Different

    - by jfm429
    Hopefully someone can tell me what's going on here. I'm trying to link to gdiplus.lib and I tried to go to "Properties - Linker - Input - Additional Dependencies" to add the library but I do NOT have that section. I'm using Visual C++ 2008. Here's what I see: Common Properties Framework and References Configuration Properties General Degugging C/C++ Librarian Resources XML Document Generator Browse Information Build Events Custom Build Step I've checked every subcategory and there is NOT a "Linker" section or an "Input" section. Once again, this is Visual C++ 2008 without any customizations or strange settings. I have a screenshot at http://drp.ly/13ma9l if anybody's interested. How come my Property panel is completely different than everyone else's? Typical Microsoft crap I suppose...

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  • Silverlight 4 accessing WCF Data Services: BeginInvoke frustrations.

    - by Gatmando
    Hi, I'm attempting to follow a pattern for performing WCF data service queries using the Silverlight 4 beta. The following is my code: public CodeTables() { CodeCountries = new ObservableCollection<dsRealHomes.CodeCountries>(); dsRealHomes.RealHomesEntities myClient = null; myClient = staticGlobals.RealHomesContext(); object userState = null; myClient.BeginExecute<dsRealHomes.CodeCountries>(new Uri("CodeCountries"), (IAsyncResult asyncResult) => { Dispatcher.BeginInvoke( () => { var test = myClient.EndExecute<dsRealHomes.CodeCountries>asyncResult).ToList(); } ); }, userState); } This is derived from a number of examples I've come across for WCF data services with silverlight. Unfortunately no matter how I try to implement the code i end up with the following error on 'Dispatcher.BeginInvoke': 'An object reference is required for the non-static field, method, or property (System.Windows.Threading.Dispatcher.BeginInvoke(System.Action)' Thanks

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  • C# Change dynamically NavigateUrl HyperLinkField

    - by Martijn
    Hi, In my code i create a HyperLinkField object. Depending on a database field value, i want to set the NavigateUrl property. This is my problem, i don't know how. With: objHF.DataNavigateUrlFields = new[] { "id", "Stype" }; i get my database field. Now i want to check the Stype value. Depeding on this value i want to set the page where to navigate to. How can i do this?? At the end i set my datasource to the gridview and after that i call the bind() method. I hope someone can help me out

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  • Visual Studio .NET 2003 - Ignore Specific Library for libcmt vs libcmtd

    - by tefd
    Hi, I have a template VS .NET 2003 project, which colleagues copy and customise when developing their software. It appears the template was altered a while back to set the IgnoreSpecificLibrary property to have libcmt.lib for both release and debug builds (i.e. for both release and debug, the build should ignore libcmt.lib in the linker). Some projects based on this have since been built, with the release build pulling in libcmtd.lib (evident by looking through the project .map file) which appears to have caused some runtime issues (i.e. a dialog window being flashed up as though a breakpoint had been set). Does setting IgnoreSpecificLibrary to exclude libcmt.lib automatically make the project link against libcmtd.lib? What is weird is that building the template (with the incorrect setting) links against libcmt.lib whereas some of the customised projects (though not all) link against libcmtd.lib. Any ideas?

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  • Uiscrollview displayed with focus at its center iphone sdk

    - by neha
    Hi all, I'm having a scrollview and a view over it both of which I'm creating through interface builder. But whenever I run the program the scrollview displays the part of the view which is almost at its center. It is scrollable, so when I pull it down, I can see the text in the view above but when I leave it's again positioned the earlier way i.e. somewhat down the actual (0,0) position. Can anybody hint me at the property which should be set in order to fix this?

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  • entity framework, loadproperty not working - The selector expression for LoadProperty must be a Memb

    - by SLC
    The selector expression for LoadProperty must be a MemberAccess for the property. I'm converting some C# to VB, this is the C# line: entities.LoadProperty((MyType)MyTargetObject, c => c.MyProperty); I convert it to VB like so: entities.LoadProperty(DirectCast(MyTargetObject, MyType), Function(c) c.MyProperty) However I get the error above. I don't understand what the code is doing, or anything at all, I am simply converting it line by line into Visual Basic. When I run the project, the error I get is the one above. All I can see is that Entities is a class that inherits ObjectContext, which might mean something. Any help would be soooo good because I am stressing out big time. Thanks.

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  • Storing Interface type in ASP.NET Profile

    - by NathanD
    In my ASP.NET website all calls into the data layer return entities as interfaces and the website does not need to know what the concrete type is. This works fine, but I have run into a problem when trying to store one of those types into the user Profile. My interface implements ISerializable, like the following: public interface IInsured : IPerson, IEntity, ISerializable and the concrete type in the datalayer does implement ISerializable. My Profile property in web.config is: <add name="ActiveInsured" type="FacadeInterfaces.IInsured" serializeAs="Binary" defaultValue="[null]"/> It compiles just fine, but I get a runtime error on Profile.Save() saying that the interface cannot be serialized. I have also tried it with serializeAs="Xml". I thought that if my interface implemented ISerializable it would work. Anybody had this problem before or know of a workaround?

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